Jie WANG;Zuohua HUANG ;Bing LIU;Xibin WANG; Simulation of combustion in spark-ignition engine fuelled with natural gas-hydrogen blends combined with EGR Jie WANG;Zuohua HUANG ;Bing LIU;Xibin WANG; State Key Laboratory of Multiphase Flow in Power Engineering, Xi’an Jiaotong University, Xi’an 710049, China ; Fig.2 Schematic diagram of experiment setup 1-fuel tank; 2-fuel pump; 3-fuel filter; 4-ignition coil; 5-distributor; 6-spark plug; 7-fuel injector; 8-manifold pressure sensor, 9-gas mixer, 10-CNG-H 2 control step motor, 11-CNG-H 2 regulator, 12-CNG-H 2 valve, 13-coolant in, 14-coolant out, 15-air filter, 16-idling control step motor, 17-throttle position sensor, 18-coolant water temperature sensor, 19-crankshaft position sensor, 20-oxygen sensor, 21-battery, 22-ignition switch, 23-gasolineCNG selection switch Frontiers of Energy and Power Engineering in China,2009,3(2),204-211. Doi:10.1007/s11708-009-0026-9